./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbde3ab1953d8937efac8b8b2822040abdf74b6ffa6ca789e8e69e82dc2a63c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:14:54,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:14:54,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:14:54,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:14:54,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:14:54,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:14:54,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:14:54,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:14:54,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:14:54,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:14:54,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:14:54,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:14:54,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:14:54,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:14:54,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:14:54,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:14:54,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:14:54,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:14:54,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:14:54,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:14:54,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:14:54,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:14:54,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:14:54,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:14:54,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:14:54,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:14:54,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:14:54,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:14:54,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:14:54,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:14:54,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:14:54,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:14:54,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:14:54,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:14:54,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:14:54,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:14:54,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:14:54,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:14:54,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:14:54,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:14:54,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:14:54,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:14:54,788 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:14:54,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:14:54,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:14:54,790 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:14:54,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:14:54,790 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:14:54,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:14:54,791 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:14:54,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:14:54,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:14:54,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:14:54,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:14:54,792 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:14:54,792 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:14:54,792 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:14:54,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:14:54,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:14:54,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:14:54,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:14:54,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:14:54,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:14:54,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:14:54,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:14:54,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:14:54,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:14:54,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:14:54,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:14:54,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:14:54,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:14:54,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:14:54,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:54,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:14:54,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:14:54,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:14:54,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:14:54,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:14:54,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:14:54,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:14:54,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:14:54,798 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbde3ab1953d8937efac8b8b2822040abdf74b6ffa6ca789e8e69e82dc2a63c0 [2021-11-07 01:14:55,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:14:55,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:14:55,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:14:55,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:14:55,082 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:14:55,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-07 01:14:55,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/data/be1f7900e/4476c5d8f8cd4cf5b5e03e472b907cad/FLAG972a715ed [2021-11-07 01:14:55,832 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:14:55,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-07 01:14:55,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/data/be1f7900e/4476c5d8f8cd4cf5b5e03e472b907cad/FLAG972a715ed [2021-11-07 01:14:55,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/data/be1f7900e/4476c5d8f8cd4cf5b5e03e472b907cad [2021-11-07 01:14:55,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:14:55,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:14:55,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:55,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:14:55,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:14:55,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:55" (1/1) ... [2021-11-07 01:14:55,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627c241e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:55, skipping insertion in model container [2021-11-07 01:14:55,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:55" (1/1) ... [2021-11-07 01:14:55,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:14:56,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:56,712 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31102,31115] [2021-11-07 01:14:56,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31992,32005] [2021-11-07 01:14:56,766 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33651,33664] [2021-11-07 01:14:56,786 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34541,34554] [2021-11-07 01:14:56,822 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[36972,36985] [2021-11-07 01:14:56,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37865,37878] [2021-11-07 01:14:56,870 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39527,39540] [2021-11-07 01:14:56,896 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[40888,40901] [2021-11-07 01:14:57,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54752,54765] [2021-11-07 01:14:57,084 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55645,55658] [2021-11-07 01:14:57,114 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57307,57320] [2021-11-07 01:14:57,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61464,61477] [2021-11-07 01:14:57,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:57,371 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:14:57,647 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31102,31115] [2021-11-07 01:14:57,665 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31992,32005] [2021-11-07 01:14:57,692 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33651,33664] [2021-11-07 01:14:57,709 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34541,34554] [2021-11-07 01:14:57,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[36972,36985] [2021-11-07 01:14:57,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37865,37878] [2021-11-07 01:14:57,786 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39527,39540] [2021-11-07 01:14:57,808 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[40888,40901] [2021-11-07 01:14:57,947 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54752,54765] [2021-11-07 01:14:57,965 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55645,55658] [2021-11-07 01:14:57,995 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57307,57320] [2021-11-07 01:14:58,055 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61464,61477] [2021-11-07 01:14:58,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:58,194 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:14:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58 WrapperNode [2021-11-07 01:14:58,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:58,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:14:58,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:14:58,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:14:58,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:14:58,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:14:58,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:14:58,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:14:58,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:14:58,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:14:58,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:14:58,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:14:58,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (1/1) ... [2021-11-07 01:14:58,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:58,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:58,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:14:58,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969e743f-dbcc-4add-a323-98a540fad96c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:14:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:14:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:14:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:15:03,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:15:03,469 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 01:15:03,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:03 BoogieIcfgContainer [2021-11-07 01:15:03,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:15:03,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:15:03,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:15:03,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:15:03,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:14:55" (1/3) ... [2021-11-07 01:15:03,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70193c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:03, skipping insertion in model container [2021-11-07 01:15:03,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:58" (2/3) ... [2021-11-07 01:15:03,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70193c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:03, skipping insertion in model container [2021-11-07 01:15:03,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:03" (3/3) ... [2021-11-07 01:15:03,489 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-07 01:15:03,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:15:03,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 01:15:03,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:15:03,571 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:15:03,571 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 01:15:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 684 states, 671 states have (on average 1.751117734724292) internal successors, (1175), 683 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-07 01:15:03,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:03,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:03,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:03,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1913295456, now seen corresponding path program 1 times [2021-11-07 01:15:03,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:03,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449715643] [2021-11-07 01:15:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:03,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:04,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:04,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449715643] [2021-11-07 01:15:04,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449715643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:04,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:04,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 01:15:04,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741848659] [2021-11-07 01:15:05,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:15:05,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:15:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:15:05,036 INFO L87 Difference]: Start difference. First operand has 684 states, 671 states have (on average 1.751117734724292) internal successors, (1175), 683 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:05,699 INFO L93 Difference]: Finished difference Result 1788 states and 3049 transitions. [2021-11-07 01:15:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:15:05,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2021-11-07 01:15:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:05,723 INFO L225 Difference]: With dead ends: 1788 [2021-11-07 01:15:05,723 INFO L226 Difference]: Without dead ends: 1386 [2021-11-07 01:15:05,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:15:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-07 01:15:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1262. [2021-11-07 01:15:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1250 states have (on average 1.4208) internal successors, (1776), 1261 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1776 transitions. [2021-11-07 01:15:05,874 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1776 transitions. Word has length 257 [2021-11-07 01:15:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:05,878 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 1776 transitions. [2021-11-07 01:15:05,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1776 transitions. [2021-11-07 01:15:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-07 01:15:05,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:05,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:15:05,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:05,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash 903255619, now seen corresponding path program 1 times [2021-11-07 01:15:05,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:05,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751772484] [2021-11-07 01:15:05,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:05,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:06,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:06,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751772484] [2021-11-07 01:15:06,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751772484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:06,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:06,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:06,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356666642] [2021-11-07 01:15:06,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:06,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:06,601 INFO L87 Difference]: Start difference. First operand 1262 states and 1776 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:06,877 INFO L93 Difference]: Finished difference Result 3738 states and 5253 transitions. [2021-11-07 01:15:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:06,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2021-11-07 01:15:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:06,897 INFO L225 Difference]: With dead ends: 3738 [2021-11-07 01:15:06,897 INFO L226 Difference]: Without dead ends: 2485 [2021-11-07 01:15:06,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2021-11-07 01:15:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2424. [2021-11-07 01:15:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2412 states have (on average 1.4195688225538972) internal successors, (3424), 2423 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3424 transitions. [2021-11-07 01:15:07,110 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3424 transitions. Word has length 257 [2021-11-07 01:15:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:07,112 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 3424 transitions. [2021-11-07 01:15:07,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3424 transitions. [2021-11-07 01:15:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-07 01:15:07,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:07,120 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:07,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:15:07,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1079821008, now seen corresponding path program 1 times [2021-11-07 01:15:07,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:07,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331775190] [2021-11-07 01:15:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:07,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:07,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:07,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331775190] [2021-11-07 01:15:07,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331775190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:07,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:07,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:07,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050621655] [2021-11-07 01:15:07,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:07,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:07,322 INFO L87 Difference]: Start difference. First operand 2424 states and 3424 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:07,667 INFO L93 Difference]: Finished difference Result 7055 states and 9938 transitions. [2021-11-07 01:15:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-11-07 01:15:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:07,696 INFO L225 Difference]: With dead ends: 7055 [2021-11-07 01:15:07,696 INFO L226 Difference]: Without dead ends: 4752 [2021-11-07 01:15:07,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-11-07 01:15:08,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4691. [2021-11-07 01:15:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4679 states have (on average 1.416114554391964) internal successors, (6626), 4690 states have internal predecessors, (6626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6626 transitions. [2021-11-07 01:15:08,047 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6626 transitions. Word has length 259 [2021-11-07 01:15:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:08,048 INFO L470 AbstractCegarLoop]: Abstraction has 4691 states and 6626 transitions. [2021-11-07 01:15:08,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6626 transitions. [2021-11-07 01:15:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-07 01:15:08,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:08,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:08,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:15:08,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -547877568, now seen corresponding path program 1 times [2021-11-07 01:15:08,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:08,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416206174] [2021-11-07 01:15:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:08,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:08,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:08,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416206174] [2021-11-07 01:15:08,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416206174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:08,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:08,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:08,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791638039] [2021-11-07 01:15:08,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:08,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:08,149 INFO L87 Difference]: Start difference. First operand 4691 states and 6626 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:08,698 INFO L93 Difference]: Finished difference Result 13921 states and 19645 transitions. [2021-11-07 01:15:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-11-07 01:15:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:08,751 INFO L225 Difference]: With dead ends: 13921 [2021-11-07 01:15:08,752 INFO L226 Difference]: Without dead ends: 9362 [2021-11-07 01:15:08,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2021-11-07 01:15:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 4694. [2021-11-07 01:15:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4682 states have (on average 1.4158479282357967) internal successors, (6629), 4693 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6629 transitions. [2021-11-07 01:15:09,149 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6629 transitions. Word has length 259 [2021-11-07 01:15:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:09,149 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 6629 transitions. [2021-11-07 01:15:09,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6629 transitions. [2021-11-07 01:15:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-07 01:15:09,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:09,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:09,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 01:15:09,159 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:09,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1935506232, now seen corresponding path program 1 times [2021-11-07 01:15:09,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:09,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334087798] [2021-11-07 01:15:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:09,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:09,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:09,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334087798] [2021-11-07 01:15:09,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334087798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:09,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:09,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:15:09,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474724521] [2021-11-07 01:15:09,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:15:09,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:09,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:15:09,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:09,592 INFO L87 Difference]: Start difference. First operand 4694 states and 6629 transitions. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:10,311 INFO L93 Difference]: Finished difference Result 13800 states and 19462 transitions. [2021-11-07 01:15:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:10,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2021-11-07 01:15:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:10,381 INFO L225 Difference]: With dead ends: 13800 [2021-11-07 01:15:10,381 INFO L226 Difference]: Without dead ends: 9121 [2021-11-07 01:15:10,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9121 states. [2021-11-07 01:15:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9121 to 9060. [2021-11-07 01:15:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9060 states, 9048 states have (on average 1.4091511936339522) internal successors, (12750), 9059 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9060 states to 9060 states and 12750 transitions. [2021-11-07 01:15:11,081 INFO L78 Accepts]: Start accepts. Automaton has 9060 states and 12750 transitions. Word has length 260 [2021-11-07 01:15:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:11,081 INFO L470 AbstractCegarLoop]: Abstraction has 9060 states and 12750 transitions. [2021-11-07 01:15:11,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9060 states and 12750 transitions. [2021-11-07 01:15:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-07 01:15:11,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:11,101 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:11,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:15:11,101 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1986863852, now seen corresponding path program 1 times [2021-11-07 01:15:11,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:11,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438236563] [2021-11-07 01:15:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:11,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:11,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:11,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438236563] [2021-11-07 01:15:11,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438236563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:11,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:11,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:11,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471685463] [2021-11-07 01:15:11,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:11,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:11,486 INFO L87 Difference]: Start difference. First operand 9060 states and 12750 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:12,718 INFO L93 Difference]: Finished difference Result 26728 states and 37573 transitions. [2021-11-07 01:15:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2021-11-07 01:15:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:12,764 INFO L225 Difference]: With dead ends: 26728 [2021-11-07 01:15:12,764 INFO L226 Difference]: Without dead ends: 17806 [2021-11-07 01:15:12,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17806 states. [2021-11-07 01:15:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17806 to 17745. [2021-11-07 01:15:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17745 states, 17733 states have (on average 1.4034850279140585) internal successors, (24888), 17744 states have internal predecessors, (24888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17745 states to 17745 states and 24888 transitions. [2021-11-07 01:15:14,245 INFO L78 Accepts]: Start accepts. Automaton has 17745 states and 24888 transitions. Word has length 261 [2021-11-07 01:15:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:14,247 INFO L470 AbstractCegarLoop]: Abstraction has 17745 states and 24888 transitions. [2021-11-07 01:15:14,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 17745 states and 24888 transitions. [2021-11-07 01:15:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-07 01:15:14,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:14,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:14,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:15:14,287 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash -339796395, now seen corresponding path program 1 times [2021-11-07 01:15:14,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:14,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459510648] [2021-11-07 01:15:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:14,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:14,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:14,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459510648] [2021-11-07 01:15:14,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459510648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:14,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:14,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058596645] [2021-11-07 01:15:14,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:14,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:14,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:14,671 INFO L87 Difference]: Start difference. First operand 17745 states and 24888 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:16,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:16,388 INFO L93 Difference]: Finished difference Result 44967 states and 62799 transitions. [2021-11-07 01:15:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:16,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2021-11-07 01:15:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:16,463 INFO L225 Difference]: With dead ends: 44967 [2021-11-07 01:15:16,463 INFO L226 Difference]: Without dead ends: 27364 [2021-11-07 01:15:16,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27364 states. [2021-11-07 01:15:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27364 to 26007. [2021-11-07 01:15:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26007 states, 25995 states have (on average 1.3786112713983458) internal successors, (35837), 26006 states have internal predecessors, (35837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26007 states to 26007 states and 35837 transitions. [2021-11-07 01:15:18,354 INFO L78 Accepts]: Start accepts. Automaton has 26007 states and 35837 transitions. Word has length 263 [2021-11-07 01:15:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:18,355 INFO L470 AbstractCegarLoop]: Abstraction has 26007 states and 35837 transitions. [2021-11-07 01:15:18,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 26007 states and 35837 transitions. [2021-11-07 01:15:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 01:15:18,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:18,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:18,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 01:15:18,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash -283380199, now seen corresponding path program 1 times [2021-11-07 01:15:18,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:18,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597434452] [2021-11-07 01:15:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:18,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:18,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:18,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597434452] [2021-11-07 01:15:18,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597434452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:18,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:18,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:18,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822206033] [2021-11-07 01:15:18,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:18,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:18,539 INFO L87 Difference]: Start difference. First operand 26007 states and 35837 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:20,756 INFO L93 Difference]: Finished difference Result 69544 states and 95440 transitions. [2021-11-07 01:15:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 01:15:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:20,857 INFO L225 Difference]: With dead ends: 69544 [2021-11-07 01:15:20,858 INFO L226 Difference]: Without dead ends: 45099 [2021-11-07 01:15:20,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45099 states. [2021-11-07 01:15:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45099 to 45038. [2021-11-07 01:15:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45038 states, 45026 states have (on average 1.3713854217563186) internal successors, (61748), 45037 states have internal predecessors, (61748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45038 states to 45038 states and 61748 transitions. [2021-11-07 01:15:23,400 INFO L78 Accepts]: Start accepts. Automaton has 45038 states and 61748 transitions. Word has length 265 [2021-11-07 01:15:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:23,401 INFO L470 AbstractCegarLoop]: Abstraction has 45038 states and 61748 transitions. [2021-11-07 01:15:23,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 45038 states and 61748 transitions. [2021-11-07 01:15:23,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 01:15:23,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:23,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:23,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 01:15:23,459 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1040203275, now seen corresponding path program 1 times [2021-11-07 01:15:23,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:23,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568718928] [2021-11-07 01:15:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:23,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:23,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:23,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568718928] [2021-11-07 01:15:23,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568718928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:23,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:23,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:23,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743868580] [2021-11-07 01:15:23,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:23,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:23,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:23,687 INFO L87 Difference]: Start difference. First operand 45038 states and 61748 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:27,460 INFO L93 Difference]: Finished difference Result 133179 states and 182362 transitions. [2021-11-07 01:15:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:27,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 01:15:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:27,619 INFO L225 Difference]: With dead ends: 133179 [2021-11-07 01:15:27,619 INFO L226 Difference]: Without dead ends: 89827 [2021-11-07 01:15:27,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89827 states. [2021-11-07 01:15:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89827 to 45071. [2021-11-07 01:15:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45071 states, 45059 states have (on average 1.3711134290596774) internal successors, (61781), 45070 states have internal predecessors, (61781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45071 states to 45071 states and 61781 transitions. [2021-11-07 01:15:30,985 INFO L78 Accepts]: Start accepts. Automaton has 45071 states and 61781 transitions. Word has length 265 [2021-11-07 01:15:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:30,986 INFO L470 AbstractCegarLoop]: Abstraction has 45071 states and 61781 transitions. [2021-11-07 01:15:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 45071 states and 61781 transitions. [2021-11-07 01:15:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-07 01:15:31,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:31,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:31,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 01:15:31,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 570029467, now seen corresponding path program 1 times [2021-11-07 01:15:31,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:31,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981592236] [2021-11-07 01:15:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:31,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:31,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:31,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981592236] [2021-11-07 01:15:31,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981592236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:31,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:31,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:15:31,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985346492] [2021-11-07 01:15:31,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:15:31,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:15:31,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:31,457 INFO L87 Difference]: Start difference. First operand 45071 states and 61781 transitions. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:36,337 INFO L93 Difference]: Finished difference Result 131864 states and 180366 transitions. [2021-11-07 01:15:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2021-11-07 01:15:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:36,464 INFO L225 Difference]: With dead ends: 131864 [2021-11-07 01:15:36,464 INFO L226 Difference]: Without dead ends: 86993 [2021-11-07 01:15:36,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86993 states. [2021-11-07 01:15:41,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86993 to 86932. [2021-11-07 01:15:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86932 states, 86920 states have (on average 1.3618499769903358) internal successors, (118372), 86931 states have internal predecessors, (118372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86932 states to 86932 states and 118372 transitions. [2021-11-07 01:15:41,622 INFO L78 Accepts]: Start accepts. Automaton has 86932 states and 118372 transitions. Word has length 266 [2021-11-07 01:15:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:41,623 INFO L470 AbstractCegarLoop]: Abstraction has 86932 states and 118372 transitions. [2021-11-07 01:15:41,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 86932 states and 118372 transitions. [2021-11-07 01:15:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-07 01:15:41,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:41,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:41,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 01:15:41,725 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:15:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2030518834, now seen corresponding path program 1 times [2021-11-07 01:15:41,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:41,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631965923] [2021-11-07 01:15:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:41,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:42,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:42,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631965923] [2021-11-07 01:15:42,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631965923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:42,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:42,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:42,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972327837] [2021-11-07 01:15:42,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:42,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:42,374 INFO L87 Difference]: Start difference. First operand 86932 states and 118372 transitions. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)